Reversible Formation and Transmetalation of Schiff-Base Complexes in Subcomponent Self-Assembly Reactions

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• 作者：Dennis Lewing ; Hannah Koppetz ; F. Ekkehardt Hahn
• 刊名：Inorganic Chemistry
• 出版年：2015
• 出版时间：August 3, 2015
• 年：2015
• 卷：54
• 期：15
• 页码：7653-7659
• 全文大小：447K
• ISSN：1520-510X

文摘

Dinuclear complexes [Zn₂(NS,NS)₂] 3 and [Ni₂(NS,NS)₂] 6 bearing Schiff-base ligands featuring two NS donor groups were obtained in subcomponent self-assembly reactions using nickel or zinc as template metals. Several transmetalation reactions starting from 3 or 6 yielded the complexes [Pd₂(NS,NS)₂] 4 and [Co₂(NS,NS)₂] 5, and their molecular structures were determined by X-ray diffraction. Starting from the mononuclear complex [Ni(NS/NOH)₂] 9 featuring a coordinated NS Schiff base and a free NOH Schiff base, completely reversible thermodynamically controlled imine bond formation was observed leading to complex [Ni₂(NS,NS)₂] 6 and the free Schiff -base ligand NOH,NOH 10.